Acetonitrile is a nitrile solvent classified under the category of Solvents for gaschromatographic and residue analysis. It has a molecular weight of 41.05 g/mol and falls under the substance group Nitriles. In the workplace, it is essential to adhere to specific guidelines such as wearing safety goggles, safety gloves, and prohibiting open flames, fire, and smoking. The recommended indicative occupational exposure limit value for the European Union is 8 hours limit value: 70 mg/m3 (40 ppm), as stated by Directive 2006/15/EC. Acetonitrile is a highly flammable liquid and vapor, posing a significant fire risk.

• CAS Number: 75-05-8
• Molecular Formula: C2H3N
• Molecular Weight: 41.05
• Exact Mass: 41.026549100
• Boiling Point: 178.9 °F at 760 mmHg (NTP, 1992)
• Melting Point: -49 °F (NTP, 1992)
• Vapour Density: 1.42 (NTP, 1992) - Heavier than air; will sink (Relative to Air)
• GHS Signal Word: Danger
• Hazard Statements:
• H225: Highly Flammable liquid and vapor [Danger Flammable liquids]